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Finding the Fourth Proportional to 319,998.51, 480,025.71 and 83,340.81

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Solution

The fourth proportional to 319,998.51, 480,025.71 and 83,340.81 is: 125,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,998.51 : 480,025.71 = 83,340.81 : x
  2. Step 2: Convert to fraction form
    319,998.51/480,025.71 = 83,340.81/x
  3. Step 3: Cross multiply
    319,998.51x = 480,025.71 × 83,340.81
  4. Step 4: Simplify right side
    319,998.51x = 40,005,731,492.23
  5. Step 5: Solve for x
    x = 40,005,731,492.23/319,998.51
  6. Step 6: Final answer
    x = 125,018.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.